System Type I: And copolymers thereof 

1, EVA (ethylene - vinyl acetate copolymer) 
     EVA resin is an odorless, non-toxic, white or light yellow powder or granular low melting point polymer. MI large, small molecular weight, low viscosity synthetic hot melt adhesive, good fluidity. 
Advantages: adhesion, softness, heat fluidity. 
Disadvantages: low intensity, not heat, intolerance of fatty oil, can not be used as structural adhesive. 

2, EEA (ethylene - ethyl acrylate copolymer) 
     EEA do hot melt matrix resin, ethyl acrylate content of about 23%. 
     Its structure is similar to EVA, but its wider use temperature Wai, good thermal stability, low polarity. Commonly used in high-temperature coating, viscosity, high strength requirements of the occasion, and the polar and non-polar substrates have very good adhesion. 
        
3, EAA (ethylene - acrylic acid copolymer) 
      EAA containing polar carboxyl group, so that the metal and non-metal has a good adhesion. 
      EAA also with the nature of the resin acid monomer content. Acrylic acid content is increased, transparency of the film, low-temperature resistance and low temperature heat-sealing adhesive is improved, and the tensile strength of the metal and the hot melt adhesion is improved. 

4, EVAL (ethylene - vinyl acetate - vinyl alcohol terpolymers) 
     EVAL the EVA saponification product as a white or pale yellow powder or granules. 
     EVAL molecules containing hydroxyl groups, the polarity of the substrate to improve the adhesion of promise, and the rigidity, workability, colored resin has increased. 

System Type II: 
Polyolefin (PO) 
1, PE (polyethylene) 
     PE is non-toxic, low temperature resistance, high crystallinity, chemical resistance, non-sticky substance itself. MI of low molecular weight, high heat seal strength, flexibility and thermal adhesive layer is good. MI are often used to make hot melt adhesive is 2-20g/10min. Due to non-polar polyethylene materials, the need to use low polarity with the agent. 

2, PP (polypropylene) 
         Depending on the arrangement of methyl spatial location, there can be isotactic, syndiotactic and atactic polypropylene points. Usually produce atactic polypropylene hot melt adhesive (APP) as the matrix, such slow curing hot melt adhesive, high heat resistance, and therefore is often low molecular weight polyethylene or crystalline polypropylene. 
        
System Type III: 
APAO (ethylene - propylene-1 - butene polymer) 
     APAO is an amorphous poly-alpha olefins. EVA compared with a wider range of temperate, excellent substrate adhesion, strong adhesive force can be used for high strength structural requirements, such as plastic. As the copolymer, so the performance of a wide range of coverage (such as: viscosity, softening point and hardness). And good compatibility with many materials. 

System Type IV: 
Polyester (PES) 
         Polyesters of unsaturated polyesters and the thermoplastic polyester types. As adhesives, required of the thermoplastic polyester, i.e. a linear saturated polyester as the base material, which is the polycondensation of a dibasic acid and a dihydric alcohol or an alkyd formed. The thermoplastic polyester high melting point and glass transition temperature, the obtained heat resistance of hot melt adhesive. Polyester hot melt adhesive is a copolymer used alone, without adding other ingredients. 
        
System Type V: 
Polyurethane (PU) 
         Polyurethane is white irregular spherical or cylindrical particles into polyester and polyether two categories. Common polyester polyol with a diisocyanate polymerization. Polyurethane most prominent feature is excellent wear resistance, high hardness, high strength, flexibility, and low temperature resistance. Polyurethane reactive hot melt adhesives can be divided into melt and melt heat curable reactive. 
        
System Type VI: 
Polyamide (PA) 
     Polyamide hot melt adhesive having a strong adhesive strength, and the greater the intensity of the molecular weight, the viscosity has increased, but little change in melting point. Polyamides can be divided into two categories: one dimer acids (high molecular weight, melt viscosity, high softening point, high strength hot melt process but decreased); First nylon type (commonly used for convenience formaldehyde made of nylon hydroxymethyl) 

System Type Seven: 
Styrene block copolymer and 
     Features such copolymers are: there is no cure rubber vulcanization characteristics, excellent creep resistance, can be compatible with a variety of blending material, but its heat resistance, resistance to UV radiation resistance and solvent properties of hydrocarbon compounds poor. 
Comprising: SBS (styrene - butadiene - styrene block copolymer), SIS (styrene - isoprene - styrene block copolymer) 

Typical applications NO.1 

Hygiene applications: VESTOPLAST and SBS / SIS comparison system 

System VESTOPLAST SBS / SIS 
Price emerging formulations, raw materials cheaper old formula system has been molded, high raw material costs, you can use relatively inexpensive resin 
Construction of multi-line coating and spray coating 
Temperature of 150-175 ° C 130-150 ° C 
Small particles can be free-flowing performance, size does not affect the health of the uneven debris will affect the health of styrene and butadiene 

VESTOPLAST system the role of modifiers: 
1, resin 
Increase the viscosity 
Reduced viscosity 
Crystallization rate of change 
2, a wax (eg: VESTOWAX A 227 or A 616) 
Lower viscosity 
Reduce the viscosity 
Opening times and shorten the curing time 
Increase the hardness and brittleness 
Waterproofness 
VESTOPLAST matrix commonly used is an excellent dispersing agent of the second component 
3, a plasticizer (polyisobutylene, polybutene and mineral oil) 
Reduced cohesion 
Reduce the viscosity 
Growth of open time and curing time 
4, the polymer 
Isotactic polypropylene (iPP) 
Can be mixed in any ratio 
Accelerate the crystallization 
Improve ball softening point to 150 ℃ 
Improve the heat stability 
5, the maleic anhydride-modified polypropylene 
Increased adhesion to polar substrates 
Polyisobutylene, SEBS 
Compatibility 
Improve adhesion 
Improve cohesion 
Improve the surface tack 
SBS, SIS 
Immiscible 
Increase the surface viscosity 

Typical applications NO.2 

A typical formulation of wood glue 
50 - 70% VESTOPLAST 408, 750, 792, 888 
10 - 20% Oil resin (eg: Eastotac ® H130, Escorez ® 1102) 
5 - 10% ester resin (eg: Foral ® 105) 
0 - 20% EVA (eg: Elvax ®) 
0 - 10% PP or PE wax (eg: LICOWAX ® PP 230) 
0 - 5% iPP (eg: Stamylan ® P 112 MN 40) 
Stabilizer 
Fillers (such as: barium sulfate, calcium carbonate, talc, ......) 

Example: Edge glue recipe 
   59 VESTOPLAST 792 
   5 iPP (MFR about 70) eg Stamylan ® P 112 MN 40 
   1 LICOMONT ® TP AR 504 
   8.5 ESCOREZ ® 5320 
   8.5 FORAL ® 105 
   1 LICOWAX ® PP 230 
   17 Sachtleben CH 1177 grinding barite 
   0.2 IRGANOX ® 1010 
   0.1 DHT-4A ® 
   0.05 NAUGARD ® 445 

Performance indicators: 
190 ° C melt viscosity [mPa s] 120,000 
Needled degrees (100/25/5) [0.1 mm] 10 
Softening point [° C] 160 
70 Hours 
Curing time 1 
Tear strength [N / cm] 10 
Compression heat stability (SAFT) [° C] 110 - 115 



Example Two: Decorative paper plastic cladding recipe 
40 VESTOPLAST 888 
8 VESTOPLAST 703 
20 EASTOTAC ® H 130 
10 ESCOREZ ® ECR 404 
15 ELVAX ® 210 
5 VESTOWAX ® AV 5012 
2 LICOMONT ® TP AR 504 
0.2 IRGANOX ® 1010 

Performance indicators: 
190 ° C melt viscosity [mPa s] 23,600 
Needled degrees (100/25/5) [0.1 mm] 13 
Softening point [° C] 155 
Opening time 80 - 90 
Pressurized thermal stability (SAFT) [° C] 105 - 110 

Typical applications NO.3 

Paper Composite typical formula: 
90% VESTOPLAST 608 or 708 
10% resin (Escorez 1102) 
Stabilizer 

Wood / plastic packaging: 
VESTOPLAST and EVA contrast 

System VESTOPLAST EVA 
Good temperature resistance temperature performance is poor (maximum 120 ° C) temperature performance (maximum 80 ° C) 
Application temperature slightly higher application temperature low temperature applications 
Adhesion to plastic, wood and paper with good adhesion to other wood and paper with good adhesion 
Opening hours long and short open time adjustable short open time 
Recycled paper can be recycled: 
The resin contained in the formulation and waxes less material, easy separation of the adhesive from the pulp due to the high density EVA adhesive, the paper is difficult to recycle 


Bonding Mattresses typical formula: 
60 - 85% VESTOPLAST ® (408, 508, 703) 
5 - 15% of the resin (ESCOREZ ® 1102, EASTOTAC ® H 130) 
5 - 15% polybutylene fat (NAPVIS ® D10) 
5 - 10.% Of butylated rubber 

Example: bonding mattresses recipe 
25 parts VESTOPLAST ® 508 
40 parts VESTOPLAST 703 
15 parts ESCOREZ ® 1102 
15 parts NAPVIS ® D 10 
5 parts of butyl rubber PB-402-24 
0.3 part IRGANOX ® 1010 

Performance indicators: 
190 ° C melt viscosity [mPa s] 1,400 
Needled degrees (100/25/5) [0.1 mm] 25.5 
Softening point [° C] 110 
Hours [min] 6 

PP food packaging adhesive glue part of the typical formula: 
50 - 80% VESTOPLAST ® (408, 703, 704, 708, 750, 828) 
10 - 30% of the resin, such as: 
                    ESCOREZ ® 1102 
                    EASTOTAC ® H 130 
                    WINGTACK ® 95 
                    FORAL ® 105 
0 - 15% VESTOWAX ® (A 616) 


For example: PP food packaging adhesive glue part low viscosity formulations 
50 VESTOPLAST ® 704 
35 WINGTACK ® 95 
5 FORAL ® 105 
0.3 IRGANOX ® 1010 


Performance indicators: 
190 ° C melt viscosity [mPa s] 1,100 
Needled degrees (100/25/5) [0.1 mm 31 
Softening point [° C] 90 

Example: car interior polypropylene adhesive glue typical formula 
45 VESTOPLAST ® 508 
45 VESTOPLAST 708 
10 FORAL ® 85 
0.45 stabilizer (IRGANOX ® 1010, DHT 4A, Naugard 445)